odd length, e.g. length = 9, take the 5th element, at index 4 even, e.g. length = 10, take the 5th and 6th elements, at indices 4 and 5 ...
# you may not use this file except in compliance with the License. # You may obtain a copy of the License at # http://www.apache.org/licenses/LICENSE-2.0 ...